1.) Follow the Gaia ToS. Should be pretty obvious at this point.
2.) No god-moding or powerplaying.
Example of god-moding:
Kratos stepped out from the lightning of Genis' Indignation Judgment. Brushing dust off his shoulder, the angel looked coldly at the young spellcaster. "Is that honestly all you can muster?" he asked.
((See that? Even though Kratos IS made of win, there's no way he could just shrug off Genis's best spell.))
Example of powerplaying:
"Beast!"
Summoning mana from his body, Lloyd created an ethereal lion head to shoot forth from his shoulder, forcing Yuan to slam into a wall and instantly knocking him out.
((Taking control of another character and immediately assuming their threshold for pain/ being knocked out is also bad.))
Of course, these are for player vs. player roleplays. If it's a story battle against an NPC, we can let that kind of thing slide.
3.) I'd like to reiterate a certain part of the Terms of Service:
"Roleplays with a rating over PG-13 should NOT be done in forums!"
So, if you know that part of a roleplay is gonna get... sensual, then black out to the following morning, take it PMs (Although that's not much better...), but just keep it out of the clan forums.
4.) Not really a "Rule" but even though the forum says "Roleplay," clan members are MORE than welcome to post fanfiction, one-shots or even little snippets of what they think their character in zOMG! is like.
So... have at it!